Safety stop means for typographical machines



Ogt. 9, 1928. 1,687,385

W. PETERSON SAFETY STOP MEANS FOR TYPOGRAPHICAL MACHINES Fi led Dec. 23, 1927 2 Sheets-Sheet. 1 v

[N VENTOR Get. 9, 1928.

W. PETERSON SAFETY STOP MEANS FOR TYPOGRAPHICAL MACHINES Filed Dec. 23, 1927 2 Sheets-Sheet 2 A TTORNEY Patented Get. 9, 1928.

' UNITED STATES "WILLIAM PETERSON, OF BROOKLYN, NEW YORK, ASSIGNOR TO INTERTYPE CORPO- RATION, OF BROOKLYN, NEVJ YORK, A CORPORATION OF NEW YORK. I

SAFETY savor MEaNs son rrroensrnrcan MACHINES.

Application filed December 23, 1927. serial No. 242,187.

' ments in typographical machines and more especially. to those of the general class shown and described in Letters Patent No. 436,532

granted September 16, 1890 to O. Mergenthaler, wherein character bearing matrices are assembled and composed into a line which is then lowered by a so-called elevator to a position in front of a mold, whereupon a type bar or slug is cast in the mold and against the character-bearing edges of the matrices forming the line.

Developments of machines of this class have brought into use molds having recessed mold caps whereby type bars bearing much higher or larger characters than obtainable with the standard or usual slot-like molds are produced, and usually suchrecessed molds are mounted on the same mold wheel with the ordinary or standard molds, so that the operator may easily and quickly bring a recessed mold into position for use whenever such is desired.

However, when the machine is operating to cast type bars from a recessed mold of the class referred to, the line of matrices is presentedto the mold at a higher level than that at which the matrix line is presented to t usual or standard mold, in order that the elevator carrying the matrix line may clear. the relatively higher recessed mold cap and for other reasons, and while the machines have been provided with devices for stopping the descent of the elevator at the relatively higher level for casting from the recessed mold and with means for automatically stopping the operation of the machine in the event the elevator, for any reason does not elevator would then be in a position where it would be struck by the enlarged recessed cap of the mold as the latter advances to make the cast, and damage would result to the machine. I

The present invention provides means which is brought automatically into condition for operation when a recessed mold is brought into position for use 1n the machine,

and which is operative automatically to stop the operation of the machine in the event the I elevator stopping devices have not been set to arrest the descent of the elevator at the appropriate level for casting from the recessed mold, thereby avoiding damage which would result if the elevator were permitted to descend below such level and the operathrough. the mold Wheel, matrix elevator, vise cap and related parts of atypographical machine to which the present invention is applied;

Fi 2 represents a front elevation of the mold wheel of the machine equipped with a controlling member employed in carrying out the present invention;

Fig. 3 is a perspective view of a portion of the vise cap of the machine to which is applied the automatic stopping device embodying the present invention, the stopping device in this figurebeing held inactive by the proper setting of the elevator stopping device for the enlarged or recessed molds; and

Fig. 4 is a view similar't'o Fig. 3, the stopping device of the present invention however being shown in position to stop the operation of the machine as would result from failure to properly set the elevator stopping device to conform with the rise of the enlarged or recessed mold.

- Similar partsaredesignated by the same reference characters in the different figures.

The invention is shown in the accompanying drawings and will be hereinafter described as app-lied toa typographical machine of the general class disclosed in the patent.

hereinbefore referred to, and furthermore,

the preferred embodiment of the invention is herein shown and described, The invention however; might be applied to machines of types other than that referred to, and contaken in or standard molds.

struc'tions equivalent to that herein shown and described may be used, and such will be included within the scope of the claims.

In the present instance, 1 represents a portion of the vise frame which is usually pivoted at its lower end to the front of the main frame of the machine and is provided at its upper end with a Vise cap 2 which carries the usual vise jaws between which the line of matrices .is lowered and clamped when in casting position, as is well understood by those skilled in the art. 3 represents the so called first elevator which, in machines of this class, is slidable vertically at the front of the vise frame 1 and is provided with a head 4 which is shaped to overlie the vise cap, and the elevator head is provided with opposed jaws 5 which form a channel between them to receive an assembled line of matrices and spacers, the matrix at the end of a line being designated M in Fig. 1. The matrices employed in casting type bars or slugs bearing large or display type are formed with correspondingly enlarged character-bearing faces m which are in intaglio at their rear edges.

The mold wheel 6, which may be like those commonly used in machines of this class, is located behind the vise frame and first elevator and it is rotatable on or with a mold wheel shaft 7 to which it is secured by a nut 8, the mold wheel shaft being mounted in the mold wheel slide which is commonly used in machines of this class and is provided with means foradvaneing it or moving it into the position shown in Fig. 1 preparatory to the casting of a type bar or slug in a mold thereon and for retracting the mold wheel or moving it toward the right in Fig. 1 to disengage the mold from the matrix line and to permit the latter to be lifted out of casting position by the elevator. The construction and operation of the mold wheel slide and its actuating mechanism is well known in machines of this class.

It is usual to mount on the face of the mold wheel one or more of the standard or slot-like molds 9, two of such molds being shown in the present instance, and to also mount on the face of the mold wheel one or more molds 10 the caps of which are recessed to form enlarged cavities so that the type bars cast therein will bear character faces which are much higher or larger than those cast in the usual The enlarging of the mold cavities of the recessed molds 10 causes portions of the caps of these molds to extend further toward the periphery of the mold wheel than the caps of the standard molds. T he periphery of the mold whcel,'in machines of this class, is provided with gear teeth to cooperate with a pinion which, during the operation of the machine, rotates the mold wheel from casting position, after a type bar has been cast therein, to a position where the type bar or slug is ejected from the mold by an ejector, after which the mold wheel is rotated to return the mold in use to casting position, and the pinion which engages the mold wheel also serves as means for rotating the mold wheel manually to bring another or a different mold into position for opera tion, when such a change is desired.

Each mold body is provided usually with upper rail 12 in order that these matrices may be positioned sufficiently high to enable their upper rear lugs and the rear elevator jaw which engages them to overlie and clear the recessed or enlarged cap of such mold.

The control of the descent of the elevator whereby it may descend to its lowermost position so that the lower rear lugs of the mat rices in the matrix line carried by it'will rest on the lower rails 11 or its descent will be arrested at a relatively higher or upper level so that the lower rear lugs of the matrices in the matrix line will rest on the upper rail 12, is effected by an adjustable stop or set screw 13 which extends downwardly through the head of the elevator and is adapted to come to rest at its lower end on a controlling member 14 which is shown in the form of a bar which is slidable in a groove or recess 14 formed in the top of the vise ca-p2, the lower end of the set screw 13 being arranged to bear directly on the upper surface of the bar 14 when the latter is set to allow the elevator to make its full descent; and when the bar 14: is shifted longitudinally to bring an upwardly extending pin or projection 15 thereon into position directly beneath the set screw 13, the descent of the elevator will be arrested at the relatively higher or upper level at which the lower rearlugs on the matrices of the line carried by the elevator will be in a position to engage the upper rails 12 on the mold body. In adjusting'the mold wheel for the use of a standard mold or a recessed mold, the bar 14 requires corresponding manual setting by the operator whereby the descent of the elevator will be arrested at a level conforming with the mold thus brought into use.

Means is employed for stopping the opera-- beneath a vise jaws. Suchmeans, as commonly used Wl-lCll is guided to move forwardly and rearwa "dly' and also vertically by a-pin 17 which "led to a part 18 of the stationary frame it the machine, the stop rod being yieldingly pressed upwardly by a spring 19. The lower end of the stop rod rests against a bar or lever 20 which forms part ofthe main clutch disengaging or stop mechanism of the machine, as will beunderstood from the patent hereinbefore re erred to.- 1 1e stop rod is provided at its rear side with a blade 21 which, when the stop rod is in its fully lowered position corresponding with a ful descent oi the elevator, will be slightly below the level of a dog or plunger 22 which is slidably mounted in the stationary frame 18 and is pushed forwa ll by the engagement of a mold on the mold wheel against its rear end, when the mold wheel advances to casting position, the stop mechanism be ing then unaffected, but if the stop rod is not fully lowered, as would be the case if the elevator does not descend fully to-its appropriz 1e level, the blade 21 will be in the path ol r forward end of the dog 22, and

when this dog pushed forwardly by the advance of the mold wheel, tie stop rod 16 will in consecuence. be mshed forwardly 1 thereby causin it to actuate the bar r lever of the stop mach: nisin and thereby auto natically stop the operation of the machine. The stop rod 16 is pushed d-ovvnwardly each time the elevator approaches the limit of its descent, the upper end 23 of the stop rod pro jecting upwardly through the vise cap 2 to a position above the latter so that it may be actuated by filli -in piece which is pivotally or movably attached to the bar 14. This-filling-in piece is formed, with lower and upper steps and 26, oneor the other of which is brought into position directly c"ew 27 which projects down- 'h {16 head of the elevator,

accordin t e letting of the bar 14. Thus, when 14 occupies its normal position so that the set screw or stop 13 will come to rest directly on the top surface of the bar 14, the lower; end of the setfscrew 27 will engage the lower step 25 of the tillingin piece, and the final por on of the nt of the eleva or to its lowermost posii1 will cause the stop rod'lG to be forced downwardly enough to c ry the blade 21 thereon out of the path or the dog so that the operation of the machine will not be stopped; and when the bar 14 is shifted into the position shown in Fig. 3 to arrest the matrix line at the relatively higher level for the casting of type bars in a recessed mold which has been brought'into use, the lower end of the set screw 27 will engage the upper step 26 of the filling-in piece while the screw 13 will be alined with the pin set this" ur'oose; com arises a sto rod 16,

or projection/15011 the bar 14, and as the elevator completes 1ts descent to the; relatively higher level, the set screw 27, acting through the filling-in piece 24, will force the stop rod 16 downwardly until the blade 21 thereon is outiof the path of the dog-22, so that the operation of the machine :will not be stopped.

However, it sometimes occurs that the operator of the machine brings a recessed mold into position for use but fails to shift the stop-bar 14 from its normal position, shown, for example, Fig. 4, to the appropriate position shownin Fig. 3, and if the machine is operated in that condition, the bar 14 would not stop the descent of the elevator until it reached its lowermost position, and the stop mechanism would fail to stop the machine as the set screw 27 would engage the lower step 25 of "he filling-in piece and the latter would befree to act to depress the stop rod 16 in the normal way. If the maator fails to set the stop bar 14 in proper position'to arrest the descent of the elevator at the upper level for the making-0f a cast from a recessed mold. T his device, as shown in the: present instance,'compriscs a bracket 28 a portion of which overlies the visecap and is fixed thereto by screws29 and 30,ian extension of this bracket forming an arm 31 which is arranged beneath the vise cap, and a lever 32 which preferably rests on the bracket 28 and is pivoted on the screw which may be shouldered for this purpose. Thelever has an arm 33 the extremity of which is oil-set downwardly so that it occu pies a positionon or immediately above the top surface of the vise cap, and this arm has a pin or projection 34 which extends upwardly therefrom.- The arm 33 is of such length and position that swing of the lever 32 about the pivot screw 30 will carry the pin or projection 34 into or out of a, position beneath the filler block 24. Excessive movement of the lever 32 is prevented by the head of the screw 29 which is. arranged in recess of appropriate size in the lever 32. lever 32 is formed with a heeli35 the rec. edge of which extends substantially longitudinally ofthe stop bar 14 and overlies said bar, and a pin or projection 36 is fixed on the The luu

14 occupies the position shown in Fig. 3, the pin will bear against the rear edge of the heel and will thus hold the projection 34 out of position beneath the filling-in piece 24,

and when the bar 14 occupies the position shown in Fig. 4, the pin will be opposite to a cut-away portion 37 adjacent to the heel 35 of the lever, and the latter is then free to swing in a direction which will carry the projection 34 thereon beneath the filling-in piece 24. The bar 14 is shown in Fig. 4 in position to permit the elevator to descend to its lowermost level, and when the projection 34 is swung into position beneath the fillingin piece 24, as shown in Fig. 4, descent of the filling-in piece will be prevented by the interposition'of the projection 34 between it and the top of the vise cap so that should the elevator attempt to descend to its lowermost level, the stop bar 16 will not be pushed down so as to remove the blade 21 thereon from the path of the dog 22, and the advance of the mold wheel would then actuate the bar or lever 20 to stop the operation of the machine.

Means is provided for automatically swinging the lever 32 to bring the projection 34 thereon beneath the filling-in piece 24 and thus stop the operation of the machine in the event the stop bar 14 has not been properly set to conform with the use of a recessed mold. Such means consists preferably of a lever 38 the upper end of which is formed with a hub 39 which fits loosely 011 a screw or other suitable pivot 40 which is fixed to the forward side of the bracket 28, the loose fit of the hub 39 on the screw allowing the lever 38 to rock in a forward and rearward direction as well as to rotate about the screw or pivot as an axis. A spring 41 is provided which yiel-dingly holds the lever 38 in its rearward position but will allow the lever to move forwardly, a coil spring being preferably used which is interposed between the hub 38 of the lever and the hub of the screw or pivot 40. A flat spring 42 is fixed to the lever 38 so that it projects upwardly therefrom radially of the pivotscrew 40, and the upper end of this spring rests in aslot 43 which extends forwardly and to the front edge of the lever 32. The lower end of the lever 38 extends beneath the vise cap and its extremity is provided with a bar or blade 44 which is adapted to be engaged by the forward face of the mold wheel when the latter advances preparatory to a casting operation. The mold wheel is provided with means corresponding with a recessed mold thereon, such means being operative, when a recessed mold is brought into position for use, to act on the bar or blade 44 of the lever 38 to rotate the lever 38 and thereby cause the spring 42 to swing the lever 32 into active position. Such means consists preferably of a lug 45 which is positioned on the forward. face of the mold wheel diametrically opposite to each recessed mold thereon, the lug. being preferably shaped to fit against the mold wheel securing nut 8 and being held in place by a screw 46 which is accommodated in the usual space 8 which surrounds the nut 8, an eccentric or cam screw being preferably used the eccentric body of which is arranged to bear against 7 one of these lugs will be provided in a position diametrically opposite to each recessed mold on the mold wheel. The lug projects forwardly from the front face of the mold wheel and it is so positioned that when the mold wheel rotates to bring a recessed mold into casting position, this lug will engage the upper edge of the bar or blade 44 on the lever 38 and will cause the lever 38 to swing about the screw 40 as a pivot, thus moving the spring 42 toward the right in Figs. 3 and 4. If the stop bar 14 has been properly set to arrest the descent of the elevator at the proper level for the recessed mold, the heel 35 will merely bank against the pin 36 on the bar 14, and the lever 32 is held from swinging about its pivot 30 to carry the projection 34 beneath the filling-in piece 24, andhence the machine will be permitted to opcrate, the stop rod 16 being depressed into non-operative or non-stopping position upon each descent of the elevator, through the ac tion of the screw 27 on the elevator which depresses the filling-in piece 24, the latter being then free to descend and move the stopping rod 16 into non-stopping position. However, if a recessed mold is brought into position for use and it is attempted to operate the machine without correspondingly setting the stop bar 14, the rotative movement of the spring 42 will. cause the lever 32 to swing about its pivot 30 and to carry the projection 34 into position beneath the filling-in piece 24, as the pin 36 on the bar 14, while the latter is in its normal position as shown in Fig. 4, will be opposite to the cut-away portion 37 of the lever 32 and hence will not restrain movement thereof under the action of the spring 42. If it is attempted to operate the machine under these conditions, the movement of the elevator, as it approaches its lowermost position, will be arrested by the contact of the screw 27 thereonwith the filling-in piece 24 and depression of the fillingin piece will be prevented by the projection 34 which will then be interposed between it and the top of the vise cap,in consequence of which the stop rod 16 will remain in its elevated position so that the blade 21 thereon v III) is in the path of the dog 22, and the advance of the mold wheel will cause the dog 22 to: engage the blade 21 and thereby shift the stop 1 abnormal low position of the elevator which would bring the rear jaw 15 thereon into a position to be struck by the cap of the recessed mold when the mold wheel advances for a cast, is thereby avoided.

During the normal operations of the machine, the bar or blade as on the lever 38 will be engaged by the front of the mold wheel and the advance of the latter preparatory to each casting operation will push the lower end of the lever forwardly, but these forward and rearward movements of the lever 38 under normal operation conditions will be idle and they are permitted by the loose fit oi the hub 39 on the screw or pivot 40 and the slot engagement between the ring 42 and the lever 32. Also, the flexibility ot the spring 42 in the direction of rotation of the arm 38 will allow thelever 32 to remain immovable while the lever 38 is swung by the lug 15, when the bar 14 is properly set for a recessed mold, in which event the pin 36 thereon will engage the heel 35 and thus block rotation of the lever 32; The lower end the advancing mold wheel and by the lowerv side of the lug 45 thereon.

While the lug i5 for each recessed mold Wlll act, in the manner ust described, to stop he machine in the event it is attempted to operate it Wlllll a recessed mold in position for use but without proper setting of theelevator stop bar 14, the stopping means of the present invention will not interfere with the usual operations of the machine in making casts from the standard molds, as there are no lugs opposite to the standard molds to actuate lever 32 and hence the latter will remain inactive while the machine is operating with a standard mold in use.

I claim as my invention 1. In a machine of the class described comprising an elevator for conducting lines of matrices to different casting levels and means capable of being set manually to stop the elevator at the difierent casting levels, a mold adapted to cooperate with the elevator at one of said levels only, and means positioned by the bringing of said mold into casting position, to stop the elevator in the event the elevator stopping means is set to stop the elevator at a level other than that at which said mold is adapted to cooperate with it.

2. In a machine of the class described hav ing anelevator for conducting lines ofmat rices to casting position, and means capable of being set to stop the elevator at different casting levels, a mold capable of cooperating with the elevator at one only of said levels, and a device hav ng means. to render it oper-- ative automatically by the movement of said mold into position "for use for stopping the machine in the event the elevator stopping means is set to stop the elevator at a level other than that at which saidmold iscapable I of cooperating with it.

3. In a machine of the class described hav- 4. In a machine of the class described com prising an elevatorfor conducting lines oi matrices to casting position, elevator stopping means capable of being set in different positions to stop the elevator at different levels, and stopping means for the machine which is controlled by the elevator stopping means and is rendered inactive when the elevator assumes the level for which the eleva-' tor stopping means isset, a mold adapted to cooperate with the elevator at one of said levels only, and means operative, when said iold is in position for use, to cause the machine stopping means to act to stop the machine in the event the elevator stopping means is set to stop theelevat-or at a level other thanthat at which the mold is adapted to cooperate with it.

5. In a machine of the class described having an elevatorfor-conducting lines of mat- .rices to casting position, a stop member capable of being set in different positions to stop the elevator at difierent casting levels, and stopping means for the machine controlled by the elevator stop member, a mold adapted to cooperate with the elevator at one of said casting levels, and means which is rendered active, when said mold is brought into use, to cause the stopping means to stop the machine in the event said stop member is set to stop the elevator ata level other than that at which said mold is adapted to cooperate with it. v

6. In a machine of the class described having an elevator for conducting lines of matrices, and a stop member for stopping the elevator at diiferent levels, a mold adapted to cooperate with the elevator at one of said levels only, and stopping means for the machine including an element which is rendered operative when said stopping member is set to stop the elevator at a level other than that at which said mold is adapted to cooperate with it, and a member associated with said mold and movable into position when said mold is brought into posit-ion for use, to actu- "ate said element to cause operation of the mato difi'erent set positions in unison with said stop member and operative to render themachine stopping means inactive, a mold adapted to cooperate with the elevator at one of its casting levels, an element controlled by said stop member and movable into a position to prevent operation of said part when the stop member is set to stop the elevator at a level other than that at which said mold is adapted to cooperate with it, and means associated with said mold and movable into position, when the latter is brought into position for use, to cause movement of said element into position to prevent operation of said part and thereby permit operation of the machine stopping means.

8. In a machine of the class described having an elevator for lowering lines 0t matrices to casting position, a stop member capable of being set to stop the descent of the ele vator at one or another casting level, stopping means for the machine, and a part carried by said elevator stop member and movable' by the elevator to render the machine stopping means inactive, a mold adapted to cooperate with the elevator at one of said casting levels, an element controlled by the setting of said stop member and movable into a posi tion to prevent operation of said part by the elevator when said stop member is set to stop the elevator at a level other than that at which said mold is adapted to cooperate with it, and means rendered operative when said mold is brought into casting position for actuating said element.

9. In a machine of the class described having an elevator for lowering lines of matrices to casting position, a stop'member capable of being set in different positions to stop the elevator at different, casting levels and having a part which is set concurrently therewith and arranged to be engaged and depressed by the elevator, and stopping means for the machine embodying a controlling member arranged to be depressed into inactive position when said part is depressed by the elevator, a mold adapted to cooperate with the elevator at one;

of said casting levels, a locking member coni trolled by the elevator stop member and movable into a position to prevent depression of said part when the elevator stop. member is set to stop the elevator at a level different from that at which said mold is adapted to cooperate with it, and means located in predetermined position relatively to said mold and movable, when said mold is brought into position for use, into position to move. the locking member into position to prevent de pression of said part.

10, In a, machine of the class describedhaving an elevator for lowering lines of matrices to casting position, a stop bar capable of being set to arrest the descent of the elevator at relatively upper and lower casting levels and, carrying a filling-1n piece arranged to be depressed by the elevator, and stopping means 7 for the machine including a rod arranged to; be depressed by said filling-in piece and thus render the stopping means inactive, a mold adapted to cooperate with the elevator while the latter is at the relatively upper casting level, a locking member which is held inactive, by the elevator stop member when the latter is set to stop the elevator at the upper casting level but is movable into position to prevent depression of the filling-in piece when the elevator stop member is set to stop the eleva tor at the lower level, a lever having-means to act yieldingly on said locking member to move it into active position, and a part movable with said mold, when the latter is brought,

into position for use, into engagementwith said lever to actuate it. I

In testimony whereof I have hereunto set my hand.

WILLIAM' PETERSON. 

